基于物联网技术的旋转机械远程振动监测与故障诊断系统

发布时间：2018-05-02 10:10

本文选题：机械振动 + 动平衡　；参考：《沈阳理工大学》2017年硕士论文

【摘要】：本课题为基于物联网技术的旋转机械远程振动监测与故障诊断系统,针对机械设备由不平衡等因素引起的振动状况通常没有远程监测的现象,设计了一种利用物联网技术搭建的远程振动监测与故障诊断系统。以刚性转子旋转机械作为研究对象,进行了以“下位机-服务器-客户端”结构为核心的软件和硬件系统设计,应用物联网技术实现用户同时对多台旋转机械设备的振动状况进行远程监测和分析诊断的功能。文中详细介绍了刚性转子平衡的理论基础、不平衡量计算流程和如何使用软件硬件实现基于物联网技术的系统远程监测与故障诊断功能。远程振动监测与故障诊断系统由下位机、服务器和客户端三部分组成,使用TCP/IP协议进行远程通信,网络数据使用JSON数据交换格式进行封装。下位机以STM32F407ZGT6微控制器为核心,使用8通道16位AD转换模块AD7606完成高精度的信号采集,使用GPRS通信模块SIM900A完成网络通信。主要用于被监测设备的振动信号采集、不平衡量计算和不依赖监测设备现场网络环境的网络数据传输。硬件设计主要包括处理器、功能芯片、传感器选择,滤波电路、自适应采样频率信号采集电路、测温电路设计。软件设计主要包括主程序、信号采集子程序、定标子程序、不平衡量计算子程序和GPRS网络通信子程序的设计。服务器使用CentOS操作系统和MySQL数据库,用于处理下位机、客户端发送的网络数据和管理数据库。主要进行了数据库设计、下位机数据处理模块设计和客户端数据处理模块设计。客户端使用Qt5进行设计,用于实现多被监测设备运行状态的在线监测、历史查询和频谱分析,完成人机交互。主要进行了网络通信模块设计、登录界面设计、主界面设计、监测窗口设计和分析诊断界面设计。本文最后通过多个实验对整套系统功能和稳定性进行了分析验证,最终达到了预期目标。本课题设计的旋转机械远程振动监测与故障诊断系统成本低、性能强、操作简单、稳定性高,对及时发现和排除设备故障具有非常重要的意义。
[Abstract]:This subject is a remote vibration monitoring and fault diagnosis system for rotating machinery based on the technology of Internet of things. A remote vibration monitoring and fault diagnosis system based on Internet of things is designed. Taking the rigid rotor rotating machine as the research object, the software and hardware system design with the structure of "lower machine, server and client" as the core is carried out. The technology of internet of things is used to realize the function of remote monitoring and analyzing and diagnosing the vibration condition of many rotating machinery and equipments simultaneously. In this paper, the theoretical basis of rigid rotor balancing, the calculation flow of unbalance and how to use software and hardware to realize the remote monitoring and fault diagnosis of the system based on the Internet of things technology are introduced in detail. The remote vibration monitoring and fault diagnosis system is composed of three parts: the lower computer, the server and the client. The remote communication is carried out by using TCP/IP protocol, and the network data is encapsulated by JSON data exchange format. The lower computer takes STM32F407ZGT6 microcontroller as the core, uses 8-channel 16-bit AD conversion module AD7606 to complete high-precision signal acquisition, and uses GPRS communication module SIM900A to complete network communication. It is mainly used for vibration signal collection of monitored equipment, calculation of unbalance and network data transmission which does not depend on the monitoring equipment field network environment. Hardware design mainly includes processor, function chip, sensor selection, filter circuit, adaptive sampling frequency signal acquisition circuit, temperature measurement circuit design. The software design mainly includes the main program, the signal acquisition subroutine, the calibration subroutine, the unbalanced calculation subroutine and the GPRS network communication subprogram design. The server uses CentOS operating system and MySQL database to process network data sent by client and manage database. Database design, data processing module design and client data processing module design. The client is designed with Qt5, which is used to realize the on-line monitoring, history query and spectrum analysis of the multi-monitored equipment, and to complete the man-machine interaction. Network communication module design, login interface design, main interface design, monitoring window design and analysis and diagnosis interface design. Finally, the function and stability of the whole system are analyzed and verified by several experiments, and the expected goal is finally achieved. The remote vibration monitoring and fault diagnosis system for rotating machinery designed in this paper has the advantages of low cost, strong performance, simple operation and high stability. It is of great significance for the timely detection and troubleshooting of equipment faults.
【学位授予单位】：沈阳理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP277;TH113.1

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